nddipiazza commented on PR #2510:
URL: https://github.com/apache/tika/pull/2510#issuecomment-3702450627
## About the Maven Caching Change
Added `cache: 'maven'` to all `setup-java@v4` steps.
**What it does:**
- Caches `~/.m2/repository` between CI runs
- Uses `hashFiles('**/pom.xml')` to invalidate cache when dependencies change
- Built-in feature of setup-java@v4 action
**Benefits:**
- Saves ~30-60 seconds per build by avoiding repeated dependency downloads
- Reduces bandwidth usage
- No code changes required - just one line per workflow
**How it works:**
```yaml
- name: Set up JDK ${{ matrix.java }}
uses: actions/setup-java@v4
with:
distribution: 'temurin'
java-version: ${{ matrix.java }}
cache: 'maven' # ← This enables caching
```
This is equivalent to manually using `actions/cache@v4` but more concise.
See [setup-java caching
docs](https://github.com/actions/setup-java#caching-packages-dependencies).
The cache will be automatically invalidated if any pom.xml files change.
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